Home / 15,659.48-21,638.72-11,403.15

Finding the Fourth Proportional to 15,659.48, 21,638.72 and 11,403.15

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Solution

The fourth proportional to 15,659.48, 21,638.72 and 11,403.15 is: 15,757.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.48 : 21,638.72 = 11,403.15 : x
  2. Step 2: Convert to fraction form
    15,659.48/21,638.72 = 11,403.15/x
  3. Step 3: Cross multiply
    15,659.48x = 21,638.72 × 11,403.15
  4. Step 4: Simplify right side
    15,659.48x = 246,749,512.95
  5. Step 5: Solve for x
    x = 246,749,512.95/15,659.48
  6. Step 6: Final answer
    x = 15,757.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.